Locomotive-boiler.



PATENTED JUNE 12, 1906.

J. F. DE NAVARRO.

LOOOMOTIVE BOILER. APPLICATION FILED MAR. a, 1905.

2 SHBETfi-SHEET 1.

o'oOooo ooooooog'o' '1] 'l oooooooqpgo PATENTED JUNE 12, 1906.

J. P, DE NAVARRO,

LOGOMOTIVE BOILER.

APPLICATION FILED MAR.3,1905.

2 .HEETSSHEET 2.

UNITED STATES PATENT No. sea ass.

. Specification of Letters Patent.

Patented. Suns 3.2, 7

Application filed March 3, 1905'. Serial No. 248,279.

To all whom, it may concern.-

Be it 'known that I, JOSE F. DE NAVARRO, a subject of the King of Spain, and a resident of the borough of Manhattan, in the city and State of New York, have invented a new and useful Locomotive-Boiler, of which the fol lowing is a specification.

My invention relates to locomotive-boilers, the object bein to provide a boiler of this type which shall be capable of burning pulverized fuel with great economy and high efficiency. I

In the accompanying drawings, Figure 1' is a artial longitudinal vertical section through a oiler embodying my invention. Fi 2 is a transverse section in the plane of the no A A, Fig. 1; and Fig. 3 is a horizontal section in the plane of the line B B of Fig. 1.

Theboiler, so far as its external sha e and general structure is concerned, may lie any one of the locomotive-boilers at present in use, and one of the advantageous features of my invention is that it may be readily ap lied to boilers at present in use i as well as to t ose which may be especiall built to embody it.

The outer shell ofthe boiler is denoted by 1.

The general wall of'the fire-chamber is de noted by 2, and the water-space between the shell 1 and fire-chamber 2 by 3. The waterspace is continued down the sides and front of the fire-cibamber, and the wall 2 is held in proper re ation to the shell 1 by numerous tie-rods or rivets 4. p

The group of tire-tubes leading from the front of the fire-chamber to the uptake is denoted by 5, and the steel -dome by 6.

The rear art of the fre-chamber is separated from t" efront part throughout a oonsiderable portion of its height by a brick wall 7 which, starting at the bottoin 8, extends u wardly and gradually curves over toward t e rear end of the boiler, finally terminatin at a point spaced from the top of the fire-c amher a distance sufficient to permit the produ cts of combustion to pass into the-front part of the chamber.

The brick wall 7 is supported by a series of watentubes 9, which are secured at their upper ends in the rear wall of the fire-chamber at or near its top and curve downwardly and forwardly, housed within the brick wall 7, until they reach a point near the bottom 10 of thei'ront part of the chamber and thence extend ox oscd along the said front part of the chamber to the front wall of the firechamber, where their lower ends are secured,

the said tubes S forming circulating connec tions between the waterspaces at the front and rear of the fire-chamber and at the same time a support for the wall 7.

To further strengthen the wall crease the watencirculating space, tubes'll, preferably alternating with the tubes 9, con nect with the top wall of the lire-chamber over the top of the wall 7 and ezrtsnd downs wardly, following the curve the wall 7 in and in- Proximity to the front of the well and thence 1 along near the bottom of the iront part of the fire-chamber to their, connection with the front wall of the chamber.

The bottoms 8 and 1-0 of the parts of the fire-chamber are brick-lined, and the bottom 8 is hinged at its front end at 12 to permit it to be dropped into the slanting posi ion shown in dotted lines, Fig. 1, to rovido for the ready reinoval of the light as 1. and sediment.

The pulverized fuel, mixed with ai., is r mitted at 18 through the rear wall of the ire chamber and near the bottom thereof.

Above the fuel-entrance brick Wall 14 is located and projects into the fire-chamber one-third of the distance, more or less, from the outer ail of the chamber to the brick wall 7 and is supported by a of tubes 15, which connect with the rear or outer Wall of the fire-chamber innnediately.

below the wall 14 and after passing along beneath said well bend upward. and return to the outer or rear wall and are secured thereto.

An upright brick linin 16 extends from I the bottom 8 u half the eight of the outer or rear wall oi t c chamber, more or less.

The tubes 15 provide for w: or ca ulatlon from the WMJQI SPElGG at the of the chem her, into-the chamber, and baclt again.

Transverse water-circulatingtubes l7 and 18 cntend across the fire-chamber near the lovv'eifi front face of the wall 7 to hold the tubes' .9 and 11 in position and at the same time ihcrease the water-heating surface.

In operation the fuel is i nited as it enters the rear part of the ili'8--Cilli3bl, and the mass of flame impinges against the .wall 7 and is deflected by rearwardly, heating the wall '7 to a high degree and also the tubes 15 and tubes 9, the mass of flame passing thence over the Wall 7 and in its course impinging'against the top wall of the lire-chsmber, then in passing througlr'thefront pert oi the 're coming into intims a contact with iie tubes 11, 17, and 18 and with. the walls the fire 13 2:. horizontal said Well upwardly and FIG chamber, and finelly passing to the uptake for directing pulverized fuel into the shamthreugh the group of fire-tubes 5,

The structure is a very. effici'ent one for transmitting to ,the water the heat from the mass of Flame resulting from burning pulverized fuel-in suspension and is so developed that it maybe readily applied to locomotives resent in common use.

hat I oleim isv Theeombinetion with the-fiiechamber of s locomotive provided with epartition or hetde weihimermedieteof its-ends and meens ber, of a hinged bottom section to the reel? of the said partition-Wall for removing the ash and sediment.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two Witnesses, this 9th day of-Feb- Puery, 1905 JOSE F. DE NAVARRO;

Witnesses:

FREDK. HAYNES, 0.5. SUNDGREN. 

